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In this post, you will be challenged to look at how statistical tests, such as correlation are commonly used and the possible limitations of such analyses. In addition, you will need to identify the appropriate application of course-specified statistical tests, examine assumptions and limitations of course specified statistical tests, and communicate in writing critiques of statistical tests.
Much has been written about the relationship between students' SAT test scores and their family's income. Generally speaking, there is a strong positive correlation between income and SAT scores. Consider and discuss the following questions as you respond:
problem 1 - what sample size is needed to obtain a 90 percent confidence interval for the mean protein content of meat
Construct a 95% confidence interval for the proportion of individuals in the target market segment who are aware of the firm's new brand
Add titles and modify the default colors, fonts, etc., as you judge appropriate to make the scatter plot effective. (b) Describe the relationship (if any) between X and Y. Weak? Strong? Negative? Positive? Linear? Nonlinear?
a draw a scatter plot of arm span x versus height y and the regression line.b obtain the correlation coefficient r the
resistors to be used in a circuit have an average resistance of 200 ohms and a standard deviation of 10 ohms. suppose
Use the sales forecaster's, predictions to describe a normal probability distribution that can be used to approximate the demand distribution.
A random sample of 500 participants was recruited for the study ? Subjects were allowed to elect to participate in an 3-month exercise program or serve as a control subject (190 chose the program, 310 chose to serve as controls)?
Convert these four officers' scores to standardized z-values.Do you believe there was adequate reason to question these four exam scores? What suppositions are you making?
Construct a 90% confidence interval on the difference in fraction nonconforming between the two processes."
If the average daily intake among 25-34-year-old males in the general population is 15 g, then, using a significance level of .05, test the hypothesis that the intake of linoleic acid in this group is lower than that of the general population. Als..
descriptive statistics for given data.weekly salaries in dollars for a sample of registered nurses are
a production process that fills 12-ounce cereal boxes is known to have a population standard deviation of 0.009 ounce.
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